If you look @ the pics on replies 26 and 27, it shows exactly what the restrictor is and what it looks like. The pump is a bit dirty but just imagine the pressure hose goes into that part. Like WT said, this part is super easy. It took all of 5-10 mins from disconnecting the hose to re-attaching it.
The restictor in my pump is not the same as the one in the picture. The one in the picture obviously has one orifice that can be easily drilled out. The resrictor in my pump has two orifices side by side and appear to be very difficult to drill out if not impossible without creating a 3/8" hole. I will post a picture when I get a chance. I am also going to try to swap in a restrictor from a differant pump that can be drilled out.
